Ladders, sneakers, and three photographers, including me, arrived before dawn to capture every step of the event.

Walruses are an example of a species forced to cope with the impacts of a changing climate and increased industrialization of the Arctic. Proceeds from the run will help WCS save walruses and further its mission of saving wildlife and wild places around the globe.

Congratulations to the finishers, especially those that showed the most creativity for the cause.

In the high Andes of Bolivia, glaciers are receding at a rapid pace. Farmers in the Apolobamba protected area are worried that a drier climate increases competition for resources among domestic animals, wildlife, and the people themselves.

The Wildlife Conservation Society works on the ground with communities that depend on natural resources to help them find mutually beneficial solutions to relieve the stress on fragile ecosystems.

While on this field assignment in Bolivia, I photographed the farmer with a 24-70 mm lens—a wide-angle zoom that captures both the foreground subject and the harsh landscape at 16,000′.

Part of my job is to photograph the births and lives of our wildlife. I took this photo of Tazo when he was a curious pup just a few months old. I hope that bringing out this adorable image from the archives will help the otter cause—one that has been clouded by climate change.